openChat: Instant Messaging, Encrypted and secure communication

Supported Encryption Standards:
	- RSA [2048,4096] (Default)
	- XXTEA
	- nXXTEA (XXTEA Secure)
	- AES (256bit)
	
Handshake:

test_connection()					--> createKeys() --> shareKeys() -- FINISHED
(Sends 2KB of random data with MD5)